<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea placeholder="请输入要BB的内容(最多吐槽120字)" maxlength="120" v-model="msg"></textarea>
        <mt-button type="primary" size="large" @click="postComments">发表评论</mt-button>
        <div class="cmt-list">
            <div class="cmt-item" v-for="(item,i) in comments" :key="item.id">
                <div class="cmt-title">
                    第{{i+1}}楼&nbsp; &nbsp; 用户：{{item.user_name}}&nbsp;&nbsp; 发表时间：{{item.add_time|dateFormat}}
                </div>
                <div class="cmt-body">
                    {{item.content}}
                </div>
            </div>
        </div>

        <mt-button type="primary" size="large" plain>加载更多</mt-button>
    </div>
</template>
<script>
import { Toast } from "mint-ui";
export default {
  data() {
    return {
      msg: "",
      comments: []
    };
  },
  props: ["id"],
  created: function() {
    this.getComments();
  },
  methods: {
    getComments() {
      this.$http
        .get("getComments?id=" + this.id)
        .then(result => {
          this.comments = result.body;
        })
        .catch(err => {});
    },
    postComments() {
      //
      if (this.msg.trim().length == 0) {
        Toast("评论内容不能为空");
        return;
      }
      this.$http.post(
          "postComments?id=" + this.id,
          {
            content: this.msg.trim()
          },
          { emulateJSON: true }
        )
        .then(result => {
          let resJson = JSON.parse(result.bodyText) 
          if (resJson.state == 0) {
              let comment = {
                  user_name:'匿名用户',
                  add_time: Date.now(),
                  content:this.msg.trim()
              }
              this.comments.unshift(comment)
              this.msg = ''
          }
        })
        .catch(err => {
          Toast("评论失败",err);
        });
    }
  }
};
</script>
<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }
  .cmt-list {
    margin-top: 15px;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>
